Hello Joshua
I don't want to sound discouraging here but although social games like Lemonade Tycoon, and Zynga's FarmVille might seem like they would be relatively simple games to make. In reality it took thousands of hours, and teems of developers to create these games not to mention the overall cost. For example the total development cost quoted by Zynga just to bring FarmVille to its beta faze was over $130,000.
But that aside html5, css3, and Construct 2 are all cutting edge technology which means they are all knew, and are being constantly developed, and improved. So you will be constantly learning new things all the time.
You see I also want to create social games. I came here from a web development background, and have been studding, and following html5 game development since early 2009 when the first few html5 game making tutorials started to emerge. Construct 2 is an incredible piece of software that allows you to create games without any coding. But to make a social game like you described you will need to know at least all the basics of html5, css3, JavaScript, PHP, and SQL.
I would suggest starting slow taking baby steps at first. This will keep game development fun and exciting. First follow Ashley's Beginner's guide to Construct 2. I learned so much from his tutorial <img src="smileys/smiley4.gif" border="0" align="middle"> It gave me a whole new perspective on game development I still go back to it to reference things when I'm stuck. Then try to make your own original simple game from what you learned. Just finishing a simple game will give you a great feeling of accomplishment. After that read the other tutorials there is a wealth of accumulating knowledge there. Then move on to making a social game. If you don't know any of the languages I mentioned earlier http://www.w3schools.com/ is a great place to learn the basics. And I would also recommend reading Making Isometric Social Real-Time Games with HTML5, CSS3, and Javascript by Mario Andres Pagella. It will give you a good idea of whats all involved in making real-time social games.